US Patent:
20190018172, Jan 17, 2019
Inventors:
- Columbia MO, US
Venu Korampally - Aurora IL, US
Sagnik Basuray - Columbia MO, US
Kunal Bhatnagar - College Station TX, US
Avinash Pathak - Columbia MO, US
Arnab Ghosh - Columbia MO, US
Drew Edwin Menke - Berger MO, US
Joseph Mathai - Columbia MO, US
Peter Cornish - Columbia MO, US
Keshab Gangopadhyay - Columbia MO, US
Aaron Wood - Columbia MO, US
International Classification:
G02B 5/18
Abstract:
A method of producing a grating structure comprises the steps of forming a stamp from flexible plastic material, the stamp including a negative of a periodic grating pattern on a first surface; forming an ink by applying a polymer film to the stamp, the ink including a first surface and an opposing second surface, wherein the first surface of the ink contacts the first surface of the stamp such that the ink retains a positive of the periodic grating pattern; placing the ink and the stamp on a substrate such that the second surface of the ink contacts an upper surface of the substrate; and removing the stamp from the ink by applying a tensional force to one edge of the stamp.